Slab reefing

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Stoker1538
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Slab reefing

Post by Stoker1538 » Mon Jun 11, 2018 3:28 pm

Has anyone got measurements where to attach the lazy jacks to the mast and boom? I want to have slab reefing on my centaur. At the moment it’s set up for the old twist boom style reefing

Thanks

Jolly Roger
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Re: Slab reefing

Post by Jolly Roger » Mon Jun 11, 2018 6:01 pm

There are no set dimensions for lazy jacks. The attached diagram is how it should look (sorry but not an expert with any drawing package). For each side of the boom you will require 2 small blocks, these are mounted at the top of the triangles to allow slight movement. Each of the lower lines should be adjustable in length to get them to set right for you. The upper line is a fixed length and is attached about half way between the spreaders and the top of the mast, but is not critical.

https://www.dropbox.com/s/2wm2vog491q0q ... n.pdf?dl=0

This photo shows them rigged on Concerto

Image

Hope this helps.
Roger
Concerto Fulmar FR38
Photos at http://s1294.photobucket.com/user/Conce ... 2/library/

Stoker1538
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Re: Slab reefing

Post by Stoker1538 » Mon Jun 11, 2018 7:14 pm

Many thanks, looks good. I need to get the sail bag bit or have one made first I think

Jolly Roger
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Re: Slab reefing

Post by Jolly Roger » Mon Jun 11, 2018 9:45 pm

If you have a foot rope in the boom, there is usually enough space for a piece of sail cloth to wrap round it and pass in the boom groove. The canvas sides are attached to the sail cloth and normally have a long batten each side at the top to keep the edge from flapping. The top of the cover has a long zip, so this becomes the mainsail cover.
Roger
Concerto Fulmar FR38
Photos at http://s1294.photobucket.com/user/Conce ... 2/library/

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Fulmar433
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Re: Slab reefing

Post by Fulmar433 » Mon Jun 11, 2018 10:17 pm

My Lazy jacks are slightly different to Roger's. The adjustment is all on the long lines. They go round blocks at the top and come down to cleats on the mast. As can be seen the height up the mast isn't critical, mine are considerably lower than Concerto's. They do in fact run down in the mast, but that's not essential.
IMG_2522.JPG
IMG_2522.JPG (1.24 MiB) Viewed 613 times
David Metcalfe
Fulmar 433 Jeddo
Lower Halstow, Kent

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